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2026-05-08 - 09:14
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Fri May 08, 2026 01:02:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1127099212204,6cyclictest0-21swapper/3600:39:4930
1127099212204,6cyclictest0-21swapper/3600:39:4830
1126099206167,27cyclictest0-21swapper/2700:19:0620
1126099206167,27cyclictest0-21swapper/2700:19:0520
1126799201197,2cyclictest0-21swapper/3300:06:4127
1126799201197,2cyclictest0-21swapper/3300:06:4127
1126799201197,2cyclictest0-21swapper/3300:06:4127
1126799201196,3cyclictest20165-21bash23:20:4327
1126799201196,3cyclictest20165-21bash23:20:4327
1126799199192,5cyclictest0-21swapper/3322:08:2427
1126799199192,5cyclictest0-21swapper/3322:08:2427
1126799195183,8cyclictest0-21swapper/3322:56:5127
1126799195183,8cyclictest0-21swapper/3322:56:5127
1126099195162,28cyclictest0-21swapper/2720:35:0120
1126099195162,28cyclictest0-21swapper/2720:35:0120
1126799194187,5cyclictest0-21swapper/3300:04:5127
1126799194187,5cyclictest0-21swapper/3300:04:5127
1126799194187,5cyclictest0-21swapper/3300:04:5027
1126799192171,14cyclictest40883-21systemd-cgroups22:25:2227
1126799192171,14cyclictest40883-21systemd-cgroups22:25:2227
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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